Pressing device



March 5, 1946. c MQ'HR' 2,395,898

' PRESSING DEVICE Filed Aug. 15. 1943 gwucm bo'n John B. Mal-u Patented Mar. 5, 1946 2,395,898

FHCE

PRESSING DEVICE John C. Mohr, Irvington, N. J.

Application August 13, 1943, Serial No. 498,547

2 Claims. (Cl. 8.6-20) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) The nvent on described herein y be mamlboth as to length of stroke of operation and of factured and used by or for the Government for the a of th ibase of each respective presser governmental purposes, without the payment to foot. Each presser foot is so designed and posime of any royalty thereon. tioned within the forked arm 4, so as to commit This invention relates to an apparatus and derotation of all of the presser feet with the arm. vice for pressing powder into containers and the By this means, successive tampings can be aclike. While the invention has particular applicomplished wherein various diameters of powder cation in the art of loading explosive powders are required to be pressed at varied depths.

into shell casings, it is not to be understood as In the operation of the device the shells 9 to limited thereto. 10 be loaded with powder are positioned on a turn- In the loading of shells and bombs, particutable 18, movement of which is actuated by motor larly shells of high calibre, such as the 8, 12, 14, I i. A powder mill [2, located in such a position and 16 inch shells, and large sized bombs, it is so as to permit direct feeding of the explosive necessary that successive increments of powder powder to each shell as it falls in line as the turn- =be forced into the shell container in successive 5 table rotates. In practice, the initial increment stages. In instances where the shell has a taperof powder is poured into the shell body and the ing body, it is obvious that varied size pressing appropriate size presser foot is used to press the tools, or presser feet as such pressing tools are powder in the shell to its desired density. The commonly called in the art, be used to effect the next succeeding increment of powder is then desired close, dense packing and tamping ,of the 20 deposited into the shell body and the appropriexplosive powder in the shell. At present, this ate sized presser foot is then employed to press is accomplished by first utilizing a presser foot the second layer of powder to its desired density. of a certain fixed diameter, pressing the powder This same operation is then repeated in succeswith this presser foot and subsequently removsive stages until the shell is filled to its desired ing the presser foot and inserting another presser depth with the required amount of explosive foot of somewhat larger diameter to press sucpowder pressed to its desired density. With each cessive increments of powder into the shells. In successive increment of powder it is to be undersome instances this operation may be repeated stood that the appropriate sized presser foot is from 3 to 4 times before the last portion of exemployed. Adjustments of bolts 13, which serve plosive powder is pressed into the shell body. to hold each presser foot rigidly in position can The primary object of the present invention is be used to arrange for the proper size presser to provide a pressing tool so designed as to overfoot to be utilized in each particular pressing step. come the need of changing the pressing tool for While there has been herein described one pareach successive pressing and tamping operation. ticular modification of the inventi it is o e An important feature of the invention is the 3J understood that changes in shape and design can saving of time and avoiding of duplication of be made without departing from the spirit and strategic materials in the loading of explosive scope of the invention. shells. I claim:

The invention can best be understood from the 1. A device for pressing powder into tapering following description to be read in view of the shell bodies comprising a reciprocable presser accompanying drawing in which: arm means for reciprocating said arm, and a Figure l is a front elevational view of the prehub pivoted to said arm and carrying a series of ferred pressing device in use; and presser feet rotatable with said hub, said presser Figure 2 is a side elevational view showing defeet having progressively increasing area of tails of the invention. presser surface and having progressively decreas.

Referring to the drawing, I indicates the frame ing length. of a shell loading device having affixed thereon 2. A device for pressing powder into tapering an air cylinder 2. The air cylinder 2, is opershell bodies comprising a reciprocable presser ated by manipulation of the controls 3, which are arm means for reciprocating said arm, a hub conveniently positioned upon frame I. If repivoted to said arm and carrying a series of quired, controls 3 can be placed at some remote presser feet rotatable with said hub, said presser point where a barricade is placed in front of the feet having progressively increasing area of device as a safety means. Extending and operpresser surface and having progressively decreasable from air cylinder 2 is a forked shape presser ing length and means for locking said hub and arm 4 which serves as a means for support for a presser feet assembly against rotation relative to series of presser feet 5, 6, 1, and 8 respectively. said arm.

Each of the said presser feet are of varying sizes, JOHN C. MOI-1R, 

